Spring unit



Sept. 19, 1933. N. STOERKEL 1,927,722

SPRING UNIT Filed April 9, 1932 2 Sheets-Sheet l I i all l .xlllllhll l o Sept. 19, 1933. N, sroERKEl. 1,927,722

SPRING UNIT Filed AApril 9, 1932 2 Sheets-Sheet 2 Patented Sept. 19, 1933 f yUNITED.fsmTES 1,927,722 SPRING Y Norman L. Srtoerkel, Pittsburgh, Pa. Application April 9, 1932. Serial lv\lo.l`604,2ti9v 1 claim. 4(el. 5-262') l This invention relates, to spring construction, and its general object is to provide a spring unit for mattresses, cushions, upholstered furniture seats and the like that includes resilient suspending, bracing and attachment means for coupled coil springs vto hold .them in proper position at all times, yet will not, interfere vwith the resilient qualitiesof the unit which due to its construction and cooperation of the suspending, bracing and` attachment vmeans with the coil springs, will perform its intended function for a'prolonged period of time and will retain its shape accordingly regardless of abuse and hard usage. Y

A further object of the invention is to provide a spring unit of the character set forth, that, is

capable of providing utmost comfort in a mattress, cushion, upholstered seat and the like under all conditions, is simple in construction, strong and substantial, inexpensive to manufacture and extremely eiicient in operation and service.

This invention also consists in certain other features of construction and in the combination 4and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

i In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a top plan view of the spring unit,

constructed in accordance with the present invention.

Figure 2 is a sectional view taken approximately on line 2 2 of Figure 1, looking in thel direction of the arrows.

Figure 3 is a sectional view taken approximately on line 3 3 of Figure 1, looking in the direction of the arrows.

Figure 4 is a perspective view of the suspension, bracing and attachment means of my unit.

Figure 5 illustrates one means of connection for the coil springs.

Figure 6 is a fragmentary top plan view illustrating another means of connection for the springs.

Figure 7 is a sectional viewv taken approximately on line 7 7 of Figure 6, looking in the direction of the arrows.

Figure 8 is a fragmentary sectional view taken through the suspending, bracing and attachment means and illustrates a modied form of means for connecting the spring arms to the frame.

' Figure 9 villustratesa further modified form of connecting means for the arms f Figure 10 is a still further modiiedform. Referring to the Ydrawings in detail, it will .be noted that I have illustrated my spring `unit as. being rectangular in formation for Ause in, a mattress or the like, but `I want it understood" that'my unit canfbe made in any shape and size without departing from the spirityoffthe invention, and' the .body of thefunit which acts in the capacity as a suspending, bracing and attachment means for the coil springs includes a pair of frames 1 and 2 which are identical in shape and are formed from resilient wire, there being a single strand of wire in each frame and the ends of the strands are secured together as at 3 in any well known Vmanner.` y i The' frames are rectangular in the formas shown and securedin spaced relation with respect to each other to the sidesand ends of the frame are spring strip arms 4. These arms are arranged in cooperating pairs and the arms ofeach pair are disposed in converging relation with their outer ends curved about the frames in clamping engagement therewith in the form asy shown in Figures 4 and 1 0. However, these arms 4 can be secured to the frames in various other ways, such as shown in Figure 8 which illustrates the outer ends of the arms as being disposed about the frames and thence extending in parallelism With the remaining portions of thev arms and secured thereto by rivets or'the like 5. In the form as shown in Figure 9, the rivets are dispensed with and the ends of the armsare spot welded to the remaining portions thereof, after the ends are passed or rolled about the frames. Y

-The inner ends of the arms of each pair are disposed in close proximity with respect to each other and are secured to transversely and longitudinally arranged strips which are formed from resilient material and for distinction the longitudinal strips are indicated by the reference numeral 6 while the transverse strips are indicated by the reference numeral 7. These strips extend between the inner ends of the pairs of arms and are secured thereto by rivets or the like 8, while the transverse strips are secured to the longitudinal strips by rivets or the like 9.

It will be noted that the arrangement of the arms 4 and strips 6 and 7 with respect to each other and with respect to the frames provide what may be termed compartments for coil PATENT, j oFFutils."'vl 'i together by wire links 11.

springs 10, and in the-form as shown, there are arranged in each of the compartments four springs which are connected together as well as to the frame and these springs cooperate with the strips, arms and frame to provide my unit.

The springs may be connected together by various means and in Figures 1, 2 3 and V5, I have illustrated the springs as being connected Y These links have their ends coiled about the end convolutions of the coil springs, and of course the springs are connected together at their upper Vand lower nation and arrangement of the several parts,

ends as shown in Figures 2 and 3.

The through the medium of strands 12 of flexible Wire and in this event the strands of wire are looped about the end convolutions of the coil springs and the ends of the strands are fixed to the end or corner springs as indicated in Fig-V ure 6.

yThe outer coil springs are connectedY to the frames 1 and 2 'by clamping clips 13 and regarde less of whether or not lthe links 11 or the strands 'of wire 12 areY used, for connecting the springs -of the coil springs due to the arrangement of` the arms 4. A

From the above description andl disclosure of the drawings, it will be obvious that I have pro springs may be connected together vided a spring unit formattresses, cushions, upholstered furniture seats and the like that is not only strong and substantial as well as capable .of retaining its shape for a prolonged period of time, but is possessed of resilient qualities, to an extent to provide utmost comfort regardless of the use to which the unit is put to.

It is thought from the foregoing description thatthe advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combiprovided that such `changes fall within the scope of the appended claim.

What I claim is:

A spring unit of the character described comprising an upper and lower marginal frame,

converging arms having their remote ends secured to the frames to hold the latter Ain spaced relation with respect to each' other?, transversely Y and longitudinally ydisposed spring strips connected to eachv other and to the opposite endsy los , istn 

